chore: tighten dockerignore to reduce build context and speed up container builds

Author: KristjanESPERANTO

.dockerignore

@@ -1,8 +1,28 @@
-/.husky/*
-/.github/*
-/website/data/*
+# Git and local editor/tooling metadata
+.git/
+.github/
+.vscode/
+.husky/
+.ruff_cache/
+.pipeline-runs/
+
+# Dependency and build artifacts
+node_modules/
+dist/
+validation-results/
+logs/
+
+# Local temporary sources and generated leftovers
+modules_temp/
+*.tsbuildinfo
+
+# Documentation not needed for container build
+docs/
+guides/
+*.md
+
+# Website runtime artifacts generated by pipeline
+website/data/*
 !website/data/cache/
 !website/data/cache/**
-/website/images/*
-/guides/*
-*.md
+website/images/*